code: def export_consecutive_delimiters() -> None:
      node = onnx.helper.make_node(
          "StringSplit",
          inputs=["x"],
          outputs=["substrings", "length"],
          delimiter="-",
          maxsplit=None,
      )
  
      x = np.array(["o-n-n--x-", "o-n----nx"]).astype(object)
  
      substrings = np.array(
          [["o", "n", "n", "", "x", ""], ["o", "n", "", "", "", "nx"]]
      ).astype(object)
  
      length = np.array([6, 6], dtype=np.int64)
  
      expect(
          node,
          inputs=[x],
          outputs=[substrings, length],
          name="test_string_split_consecutive_delimiters",
      )
  
file_path: onnx/onnx/backend/test/case/node/string_split.py
imports: import numpy
  import onnx
  from onnx.backend.test.case.base import Base
  from onnx.backend.test.case.node import expect
label_desc: Use image node_id 3 for calling the StringSplit obj's underlying member method code with example usage: obj.export_consecutive_delimiters() without return types